trying to prevent a large back that up could unleash a torrent of potentially destructive water. >> more than anything we have seen in the last 15 years. saturation levels in the hillside creating a lot of flow throughout the lower levels. >>reporter: nearby there has been a nagging flow of water through frank hererra sky light into the kitchen. >> call the contractor hope to get him over here next day to see what he has to say and hopefully they can order up a new part. the tarp is coming. before the next storm definitely. >>reporter: only kern boulevard they scrape out junk and the metal great id that goes that the station. >> gets full of grass and clean it tout make sure the pump able to run. >>reporter: the pump take all the run off from city streets and flush it into the bay. willow tree topple on hillside on valley view avenue. wasn't particularly big but the branches may have created a natural dam lead ing into a drain pipe. >> always looks better than a fallen down tree. they just recently replace the sewage and drain. they do a good job. >>reporter: during the recent holiday st